tekmar 260 Installation guide

Brand: tekmar

Model: 260

Category: Weather stations

Type: Installation guide

This manual is also suitable for

Boiler Control 260

- Data Brochure

Boiler Control 260

D 260

03/09

The Boiler Control 260 is designed to control a single stage heat source in order to provide outdoor reset or Domestic Hot Water (DHW)

operation. The control has a Liquid Crystal Display (LCD) to view system status and operating information.

Additional functions include:

• Quick Setup for easy installation and programming of control

• User comfort adjustment to increase or decrease building space

temperature

• Advanced settings to ﬁne-tune building requirements

• Pump and valve exercising

• Optional indoor sensor for room air temperature control

• Powered boiler pump output

• DHW pump or valve operation

• Optional DHW priority

• Test sequence to ensure proper component operation

• Setback input for energy savings

• 120 V (ac) power supply

• CSA C US certiﬁed (approved to applicable UL standards)

Output

Boiler

Input

Universal

Sensor

Included

Input

Outdoor

Sensor

Included

Output

Boiler System

Pump

Input

120 V (ac) Power

Supply

Input

Boiler Demand

Signal

Input

tekmar Timer

Optional

Input

Indoor Sensor

Optional

To increase or decrease the

building temperature:

Boiler Control 260

One Stage Boiler & DHW

Boiler Demand

C US

Made in Canada by

tekmar Control Systems Ltd.

tektra 910-01

Power:

Relays:

Demand:

120V + 10% 50/60 Hz 1300 VA

240V (ac) 10 A 1/3 hp

20 to 260 V (ac) 2 VA

Signal wiring must be

rated at least 300V.

H1154D

BOIL

VIEW

Test

13 14 15 16 17

Do not apply power

UnO

Com

Boil

Out

Com

11 12

Boiler

2345 6

7 8

Boiler

Demand

Power

Boil

DHW

Demand

Display defaults back to

VIEW

menu after 20 sec.

ROOM

- Set to desired room temp.

OUTDR DSGN

- Set to coldest (design)

outdoor temp.

Installer Instructions

Terminal Unit Set to

High Mass Radiant

Low Mass Radiant

Fan Coil

Convector

Radiator

Baseboard

Refer to brochure for more information

910

DHW

Pmp/Vlv

Indr

Terminal Unit

Fire Delay DHW Demand

Return

Off

Installer

Advanced

DHW during UnOcc

DHW Pump

Off

DHW Priority

DHW Valve

Item

Press the

Item

,, buttons

simultaneously for 1 sec. to

enter the

ADJUST

Use the , buttons to

adjust the

ROOM

setting

Input

DHW Demand

Signal

Output

DHW Pump OR

DHW Valve

OCC

Meets Class B:

Canadian ICES

FCC Part 15

Date Code

Note:

Boiler or DHW demand

must be powered with 20 to

260 V (ac) before the boiler

is able to ﬁre.

How To Use The Data Brochure

This brochure is organized into four main sections. They are: 1)

Sequence of Operation

, 2)

Installation

, 3)

Control Settings

, and 4)

Troubleshooting

. The

Sequence of Operation

section has three sub-sections. We recommend reading Section A:

General Operation

of the

Sequence of Operation

, as this contains important information on the overall operation of the control. Then read the sub-

sections that apply to your installation. For quick installation and setup of the control, refer to the

Installation

section,

DIP Switch

Settings

section, followed by the

Quick Setup

section.

The

Control Settings

section (starting at

DIP Switch Settings

) of this brochure, describes the various items that are adjusted and

displayed by the control. The control functions of each adjustable item are described in the

Sequence of Operation

Table of Contents

Reference Material: Essay E 003 “Characterized Heating Curve and Reset Ratio”

User Interface

The 260 uses a Liquid Crystal Display (LCD) as the method of supplying information. You use the LCD in order to set up and monitor

the operation of your system. The 260 has three push buttons (

Item

, , ) for selecting, viewing, and adjusting settings. As you program

your control, record your settings in the ADJUST menu table which is found in the second half of this brochure.

Item

The abbreviated name of the selected item will be displayed in the item ﬁeld of the display.

To view the next available item, press and release the

Item

button. Once you have

reached the last available item, pressing and releasing the

Item

button will return the

display to the ﬁrst item.

Adjust

To make an adjustment to a setting in the control, press and hold simultaneously for 1

second, all three buttons. The display will then show the word ADJUST in the top right

corner. Then select the desired item using the

Item

button. Finally, use the

button to make the adjustment.

To exit the ADJUST menu, either select the ESC item and press the or button, or leave the adjustment buttons alone for 20 seconds.

When the

Item

button is pressed and held in the VIEW menu, the display scrolls through all the adjust items in both access levels.

Additional information can be gained by observing the status ﬁeld and pointers of the LCD. The status ﬁeld will indicate which of the

control’s outputs are currently active. Most symbols in the status ﬁeld are only visible when the VIEW menu is selected.

User Interface ................................................... pg 2

Description of Display Elements .................... pg 3

Sequence of Operation .................................... pg 4

Section A: General Operation ..............

pg 4

Section B: Boiler Reset

......................... pg 5

Section C: DHW

..................................... pg 8

Installation ...................................................... pg 10

DIP Switch Settings ....................................... pg 14

Quick Setup ........................................................ pg 14

Control Settings ................................................. pg 15

View Menu

................................................ pg 15

Adjust Menu

............................................. pg 16

Testing and Troubleshooting ............................ pg 17

Error Messages

....................................... pg 19

Technical Data .................................................... pg 20

Limited Warranty ................................................ pg 20

Item

and / or

Display

Boiler DemandTerminal Unit

DHW Demand

VIEW

ADJUST

TARGET

INDR

DSGN

BOIL

OUTDR

ROOM WWSD

MAXMIN

OCC

DIFF

DHW

min

Item

Number Field

Displays the current

value of the selected

item

{

Buttons

Selects Menus, Items and

adjusts settings

Menu Field

Displays the

current menu

Status Field

Displays the current

status of the control’s

inputs, outputs and

operation

Item Field

Displays an

abbreviated name of

the selected item

Fire Delay

Symbol Description

Pump

Displays when the boiler pump is in operation.

DHW

Displays when the DHW pump or valve is in

operation.

°F, °C

Displays the units of measure that all of the

temperatures are to be displayed in the control.

OCC

Occupied Schedule

Displays when the control is in occupied (Day)

mode.

UNOCC

Unoccupied Schedule

Displays when the control is in unoccupied

(Night) mode.

Pointer

Displays the control operation as indicated by

the text.

Burner

Displays when the boiler relay is turned on.

DHW

Sequence of Operation

Section A

General Operation

Page 4

Section B

Boiler Reset

Page 5-8

Section C

DHW

Page 8-10

Section A —General Operation

POWERING UP THE CONTROL

When the Boiler Control 260 is powered up, the control displays the control type number in the LCD for 2 seconds. Next, the software

version is displayed for 2 seconds. Finally, the control enters into the normal operating mode and the LCD defaults to displaying the

current outdoor air temperature.

OPERATION

The 260 operates a single on / off heat source to control the supply

water temperature to a hydronic system. The supply water temperature

is based on either the current outdoor temperature, or on a DHW target.

Outdoor Reset

The 260 calculates a supply temperature based on the outdoor air

temperature. The 260 uses a

Characterized Heating Curve

and op-

tionally indoor temperature feedback from an indoor sensor in this

calculation.

DHW Control

When a demand signal from a Domestic Hot Water (DHW) system is

present, the control will operate the boiler to maintain the supply wa-

ter temperature at 180°F (82°C). Refer to section C.

EXERCISING

The 260 has a built-in exercising function. If a pump or valve that is connected to the control has not been operated at least once every

3 days, the control turns on the output for 10 seconds. This minimizes the possibility of a pump or valve seizing during a long period

of inactivity. While the control is exercising, the

Test

LED flashes.

Note

: The exercising function does not work if power to the control, valves, or pumps is disconnected.

SETBACK (UNOCCUPIED)

To provide greater energy savings, the 260 has a setback capability. With setback, the

supply water temperature in the system is reduced when the building is unoccupied. By

reducing the supply water temperature, air temperature in the space may be reduced

even when thermostat’s are not turned down. Any time the

UnO Sw

(13) and the

Com

(14)

terminals are shorted together, the control operates in the unoccupied (Night) mode. When

in the unoccupied (Night) mode, the UNOCC segment is displayed in the LCD. The 260

adjusts the supply water temperature based on the UNOCC settings made in the control.

FACTORY DEFAULTS

The control comes preset with several factory defaults. These defaults are based on the terminal unit selection (see section B2). To fine-

tune building requirements, these defaults may be changed. If a factory default value for a terminal unit is changed, the terminal unit

number will flash when selected in the ADJUST menu.

To reload the factory defaults listed in section B2, power down the control and wait for 10 seconds. Power up the control while

simultaneously holding the

Item

and

buttons. The terminal unit number should now be displayed constantly in the LCD rather

than flashing.

Outdoor Design

Increasing Water Temperature

Design Supply

Decreasing Outdoor Temperature

Terminal Unit

Indoor Design

Timer Switch

UnO

Com

Section B: Boiler Reset

Section B1: General

BOILER DEMAND

A boiler demand is required in order for the 260 to provide heat to the heating system. A

boiler demand is generated by applying a voltage between 24 and 240 V (ac) across the

Boiler Demand

terminals (1 and 2). Once voltage is applied, the

Boiler Demand

pointer is

displayed in the LCD. If the 260 is not in WWSD, the 260 closes the

Boil P1

contact. The

260 calculates a BOIL TARGET supply temperature based on the outdoor air temperature

and settings. The 260 then fires the boiler, if required, to maintain the target supply

temperature.

BOILER PUMP OPERATION (

Boil P1

)

The boiler pump contact (

Boil P1

, terminal 7) closes whenever there is a boiler demand and the 260 is not in WWSD. The boiler pump

segment is displayed in the LCD. After the boiler demand has been satisfied, the 260 continues to operate the boiler pump for 20

seconds. This allows some residual heat to be purged out to the heating system. During WWSD, the boiler pump is operated based

on the exercise function. For boiler pump contact operation during DHW operation, refer to section C.

BOILER OPERATION

When the 260 determines that boiler operation is required, the

Boiler

contact (11 and 12) closes. While the

Boiler

contact is closed, the

burner segment in the LCD is displayed.

INDOOR SENSOR

The indoor sensor is connected to the

Com

and

Indr

terminals (17 and 18). In addition, power must be applied to the

Boiler Demand

terminals (1 and 2) as described in the BOILER DEMAND section. With the indoor sensor connected, the 260 is able to sense the

actual room temperature. Indoor temperature feedback fine-tunes the supply water temperature in the heating system to maintain

room temperature. To adjust the room temperature, use the ROOM OCC or ROOM UNOCC setting in the ADJUST menu at the control.

If a multiple zone system is used with an indoor sensor, proper placement of the indoor sensor is essential. The indoor sensor should

be located in an area which best represents the average air temperature of the zones.

CHARACTERIZED HEATING CURVE

The 260 varies the supply water temperature based on the outdoor air temperature. The control takes into account the type of terminal

unit that the system is using. Since different types of terminal units transfer heat to a space using different proportions of radiation,

convection and conduction, the supply water temperature must be controlled differently. Once the control is told what type of terminal

unit is used, the control varies the supply water temperature according to the type of terminal unit. This improves the control of the air

temperature in the building.

BOILER TARGET TEMPERATURE (BOIL TARGET)

The BOIL TARGET temperature is determined from the

Characterized Heating Curve

settings, outdoor air temperature, and optionally,

indoor air temperature. The control displays the temperature that it is currently trying to maintain as the boiler supply temperature. If

the control does not presently have a requirement for heat, it does not show a boiler target temperature. Instead, “- - -” is displayed in

the LCD.

Section B1

General

Section B2

Installer

Section B3

Advanced

Boiler

Demand

24 to 240 V (ac)

Section B2: Installer

OUTDOOR DESIGN (OUTDR DSGN)

The OUTDR DSGN is the outdoor air temperature that is the typical

coldest temperature of the year where the building is located. This tem-

perature is used when doing the heat loss calculations for the building.

If a cold outdoor design temperature is selected, the boiler supply tem-

perature rises gradually as the outdoor temperature drops. If a warm

outdoor design temperature is selected, the boiler supply temperature

rises rapidly as the outdoor temperature drops.

ROOM OCC & UNOCC (ROOM)

The ROOM is the desired room temperature for the boiler zones, and it

provides a parallel shift of the

Characterized Heating Curve

. The room

temperature desired by the occupants is often different from the design

indoor temperature (BOIL INDR). If the room temperature is not correct,

adjusting the ROOM setting increases or decreases the amount of heat

available to the building. A ROOM setting is available for both the occu-

pied (Day) and unoccupied (Night) modes.

TERMINAL UNITS

When using a

Characterized Heating Curve

, the control requires the selection of a terminal unit. The terminal unit determines the

shape of the

Characterized Heating Curve

according to how the terminal unit delivers heat into the building space (refer to Essay

E 003). The 260 provides for selection between six different terminal unit types: two types of radiant floor heat, fancoil, fin-tube

convector, radiator and baseboard. When a terminal unit is selected, the control automatically loads the design supply temperature

(BOIL DSGN), maximum supply temperature (BOIL MAX), and minimum supply temperature (BOIL MIN). The factory defaults are

listed below. To change defaults, refer to section B3. If a default has been changed, refer to section A to reload the factory defaults.

High Mass Radiant (1)

This type of a hydronic radiant floor is embedded in either a thick concrete or gypsum

pour. This heating system has a large thermal mass and is slow acting.

Default values: BOIL DSGN = 120°F (49°C), BOIL MAX = 140°F (60°C), BOIL MIN = OFF

Low Mass Radiant (2)

This type of radiant heating system is either attached to the bottom of a wood sub-floor,

suspended in the joist space, or sandwiched between the sub-floor and the surface.

This type of radiant system has a relatively low thermal mass and responds faster than

a high mass system.

Default values: BOIL DSGN = 140°F (60°C), BOIL MAX = 160°F (71°C), BOIL MIN = OFF

150°F (66°C)

170°F (77°C)

140°F (60°C)

BOIL DSGN

BOIL MAX

BOIL MIN

Terminal Unit

190°F (88°C)

210°F (99°C)

140°F(60°C)

High Mass Radiant

(1)

120°F (49°C)

140°F (60°C)

OFF

Low Mass Radiant

(2)

Fancoil

(3)

140°F (60°C)

160°F (71°C)

OFF

Fin-tube Convector

(4)

180°F (82°C)

200°F (93°C)

140°F (60°C)

Radiator

(5)

160°F (71°C)

180°F (82°C)

140°F (60°C)

Baseboard

(6)

Decreasing OutdoorTemperature

Increasing Water Temperature

BOIL INDR

ROOM

Decreasing Outdoor Temperature

Increasing Water Temperature

cold

BOIL INDR

BOIL DSGN

warm

OUTDR

DSGN

Fancoil (3)

A fancoil terminal unit or air handling unit (AHU) consists of a hydronic heating coil and

either a fan or blower. Air is forced across the coil at a constant velocity by the fan or

blower, and is then delivered into the building space.

Default values: BOIL DSGN = 190°F (88°C), BOIL MAX = 210°F (99°C),

BOIL MIN = 140°F (60°C)

Fin–tube Convector (4)

A convector terminal unit is made up of a heating element with fins on it. This type of

terminal unit relies on the natural convection of air across the heating element to deliver

heated air into the space. The amount of natural convection to the space is dependant

on the supply water temperature to the heating element and the room air temperature.

Default values: BOIL DSGN = 180°F (82°C), BOIL MAX = 200°F (93°C),

BOIL MIN = 140°F (60°C)

Radiator (5)

A radiator terminal unit has a large heated surface that is exposed to the room. A radia-

tor provides heat to the room through radiant heat transfer and natural convection.

Default values: BOIL DSGN = 160°F (71°C), BOIL MAX = 180°F (82°C),

BOIL MIN = 140°F (60°C)

Baseboard (6)

A baseboard terminal unit is similar to a radiator, but has a low profile and is installed at

the base of the wall. The proportion of heat transferred by radiation from a baseboard is

greater than that from a fin-tube convector.

Default values: BOIL DSGN = 150°F (66°C), BOIL MAX = 170°F (77°C),

BOIL MIN = 140°F (60°C)

Section B3: Advanced

BOILER INDOOR (BOIL INDR)

The BOIL INDR is the room temperature used in the original heat loss calculations for the building. This setting establishes the beginning

of the

Characterized Heating Curve

for the boiler zones.

BOILER DESIGN (BOIL DSGN)

The BOIL DSGN temperature is the supply water temperature required to heat the boiler zones when the outdoor air temperature is

as cold as the OUTDR DSGN setting.

BOILER MAXIMUM (BOIL MAX)

The BOIL MAX is the highest water temperature that the control is al-

lowed to calculate as the BOIL TARGET temperature. If the control does

target the BOIL MAX setting, and the BOIL temperature is near the BOIL

MAX temperature, the MAX segment will be displayed in the LCD while

either the BOIL TARGET temperature or the BOIL temperature is being

viewed. At no time does the control operate the boiler above 248°F

(120°C).

BOILER MINIMUM (BOIL MIN)

The BOIL MIN is the lowest water temperature that the control is allowed

to use as the BOIL TARGET temperature. During mild conditions, if the

260 calculates a BOIL TARGET temperature that is below the BOIL

MIN setting, the BOIL TARGET temperature is adjusted to at least the

BOIL MIN setting. During this condition, if the boiler is operating, the

MIN segment turns on in the LCD while the BOIL TARGET or BOIL

temperature is being viewed. If the installed boiler is designed for low

temperature operation, set the BOIL MIN adjustment to OFF.

(21)

(32)

110

(43)

130

(54)

150

(66)

170

(77)

190

(88)

Outdoor Air Temperature

Supply Water Temperature

210°F

(99°C)

-20

(-29)

(-18)

(-7)

(5)

(16)

80°F

(27°C)

BOIL MIN

Boiler Characterized

Heating Curve

(10)

WWSD OCC

ROOM OCC

BOIL DSGN

WWSD UNOCC

BOIL INDR

OUTDR DSGN

ROOM UNOCC

BOIL MAX

FIRE DELAY (FIRE DELAY)

The Fire Delay is the delay time that occurs between the time that the 260 closes the

Boiler

contact and the burner fires. This delay is

usually the result of burner pre-purge, or other forms of time delay built into the burner’s safety circuits.

BOILER DIFFERENTIAL (BOIL DIFF)

An on / off heat source such as a boiler, must be operated with a differential in order to prevent short cycling. With the 260, either a

fixed or an auto differential may be selected.

Fixed Differential

The boiler differential is divided around the BOIL TARGET temperature.

The contact will close when the supply water temperature is 1/2 of

the differential setting below the BOIL TARGET temperature, and will

open when the supply water temperature is 1/2 of the differential setting

above the BOIL TARGET temperature.

Auto Differential (Ad)

If the Auto Differential is selected, the 260 automatically determines

the best differential as the load changes. This setting is recommended

as it reduces potential short cycling during light loads.

WARM WEATHER SHUT DOWN (WWSD) OCC & UNOCC

When the outdoor air temperature rises above the WWSD setting, the 260 turns on the WWSD segment in the display. When the

control is in Warm Weather Shut Down, the

Boiler Demand

pointer is displayed, if there is a demand. However, the control does not

operate the heating system to satisfy this demand. The control does respond to a DHW demand and operates as described in

section C.

Section C: Domestic Hot Water (DHW)

Section C1

General Domestic

Hot Water (DHW)

Operation

Section C2

DHW Priority

Section C3

DHW with Low

Temperature

Boiler

Section C1: General Domestic Hot Water (DHW) Operation

DHW DEMAND

A DHW demand is required in order for the 260 to provide heat to the DHW system. The

260 registers a DHW demand when a voltage between 24 and 240 V (ac) is applied

across the

DHW Demand

terminals (3 and 4). A DHW aquastat or setpoint control is used

as a switch in the DHW demand circuit. Once the 260 detects a DHW demand, the

DHW

Demand

pointer turns on in the LCD and the control operates as described below.

DHW DEVICE

Once the 260 receives a DHW demand, the sequence of operation depends on the type of

DHW device selected. The DHW device is selected using the

DHW Valve / DHW Pump

DIP switch.

Supply Water Temperature

Time

Differential = 10°F (5°C)

165°F(74°C)

155°F (68°C)

160°F (71°C)

DHW

Demand

24 to 240 V (ac)

Aquastat

Off

Time

Heating Load

Differential

DHW Pump (

DIP switch

= DHW Pump)

DHW Pump

is selected, the 260 assumes that the DHW pump provides adequate flow

through both the DHW tank heat exchanger, and the boiler. To provide heat to the DHW

tank, the 260 closes the

DHW Pmp / Vlv

contact (9 and 10) and operates the boiler to

provide a sufficient boiler supply temperature to the DHW tank. If using a primary loop

with the DHW tank piped in primary / secondary, set the DIP switch to

DHW Valve

DHW Valve (

DIP switch

= DHW Valve)

DHW Valve

is selected and there is a DHW demand, the 260 closes the

DHW Pmp /

Vlv

contact (9 and 10) and the

Boil P1

contact (7). The boiler pump provides flow through

the DHW’s heat exchanger once the DHW valve is opened. The 260 operates the boiler

to provide a sufficient boiler supply temperature to the DHW tank.

BOILER TARGET DURING DHW GENERATION (BOIL TARGET)

When the control receives a DHW demand, the BOIL TARGET is at least 180°F (82°C).

DHW DURING UNOCCUPIED

If a DHW demand is received during an unoccupied (Night) period, the control can either continue operation of the DHW system as it

would during the occupied (Day) period, or the control can ignore a call for DHW as long as the control is in an unoccupied (Night)

mode. This option is selected using the

DHW during UnOcc

DIP switch.

Section C2: DHW Priority

DHW PRIORITY

It is often desirable to limit or even stop the flow of heat to the heating system when the

DHW tank calls for heat. This allows for a faster recovery of the DHW tank. If DHW priority

is selected, the boiler pump (P1) is turned off on a call for DHW. This setting is available

only if DHW pump is selected as the DHW device (DIP switch =

DHW Pump

). If a valve is

used as the DHW device, DHW priority can not be used. Caution should be taken to

ensure that the flow rate of the DHW pump is adequate for both the DHW tank and the

boiler, as this will be the only pump providing flow through the boiler. This feature is selected

using the

DHW Priority / Off

DIP switch.

Note:

DHW Priority

is selected with a

DHW Valve

, the control will display an error

message. Refer to the

Error Messages

section at the back of this brochure.

DHW PRIORITY OVERRIDE

To prevent the building from cooling off too much, or the possibility of a potential freeze up

during DHW priority, the 260 limits the amount of time for DHW priority. As the outdoor air

temperature becomes colder, the length of time that the 260 provides DHW priority is

reduced. Once the allowed time for priority has elapsed, the 260 overrides the DHW priority

and operates DHW and heating simultaneously.

CONDITIONAL DHW PRIORITY

If the boiler supply temperature is maintained at or above the required temperature during DHW generation, this indicates that the

boiler has enough capacity for DHW and possibly heating as well. As long as the boiler supply temperature is maintained near its

target, DHW and heating occurs simultaneously.

DHW POST PURGE

After the DHW demand is removed, the 260 performs a purge on the boiler. The 260 shuts off the boiler and continues to operate

either the DHW pump, or the DHW valve and the boiler pump. This purges the residual heat from the boiler into the DHW tank. The

260 continues this purge for a maximum of four minutes or until the boiler supply water temperature drops below 160°F (71°C). The

260 also stops the purge if the boiler supply temperature drops below the current BOIL TARGET temperature.

DHW

Valve

Pump

Outdoor Air Temperature

Increasing Air Temperature

Increasing Time

DHW priority demand time limit

DHW MIXING PURGE

After DHW priority operation, the boiler is extremely hot. At the same time, the heating

zones may have cooled off considerably after being off for a period of time. To avoid

thermally shocking the boiler after DHW priority, the 260 shuts off the boiler, but continues

to operate the DHW while restarting the heating system. This allows some of the DHW

return water to mix with the cool return water from the zones and temper the boiler

return water.

Section C3: DHW with Low Temperature Boiler

If DHW is to be incorporated into a low temperature system such as a

radiant heating system, a mixing device is often installed to isolate the

high DHW supply temperature from the lower system temperature. If a

mixing device is not installed, high temperature water could be supplied

to the low temperature system while trying to satisfy the DHW demand.

This may result in damage to the low temperature heating system. The

260 is capable of providing DHW in such a system while ensuring that

the low temperature in the heating system does not exceed its allowed

maximum setting.

To prevent high temperature water from being introduced into the heating system, the boiler pump P1 must be turned off during a call

for DHW. To do this, the DHW device must be a DHW pump (DIP switch =

DHW Pump

), DHW priority must be selected (DIP switch =

DHW Priority

), and BOIL MIN must be set to OFF.

On a call for DHW, the 260 provides DHW priority by shutting off the boiler pump (P1) for a period of time. This time is based on the

outdoor air temperature as described in the DHW PRIORITY OVERRIDE section. However, if the DHW demand is not satisfied within

the allotted time, the boiler shuts off and the heat of the boiler is purged into the DHW tank.

Once the boiler supply temperature is sufficiently reduced, the DHW pump shuts off. The heating system is turned on for a period of

time to prevent the building from cooling off. After a period of heating, if the DHW demand is still present, the 260 shuts off the heating

system and provides heat to the DHW tank once again.

For correct operation, close attention must be paid to the mechanical layout of the system. When the 260 turns off the boiler pump

(P1), flow to the heating system must stop. If flow is not stopped, the temperature in the heating system can exceed the maximum

desired temperature, and can result in damage to the heating system.

Installation

CAUTION

Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is

your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic

control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed

into the control circuit.

STEP ONE

GETTING READY

Check the contents of this package. If any of the contents listed are missing or damaged, please contact your wholesaler or tekmar

sales representative for assistance.

Type 260 includes: One Boiler Control 260, One Outdoor Sensor 070, One Universal Sensor 082, Data Brochures D 260,

D 070, D 001, Application Brochure A 260

Note:

Carefully read the details of the

Sequence of Operation

to ensure that you have chosen the proper control for your application.

STEP TWO

MOUNTING THE BASE

Remove the control from its base by pressing down on the release clip in the wiring chamber, and sliding the control away from it. The

base is then mounted in accordance with the instructions in the Data Brochure D 001.

DHW

STEP THREE

ROUGH-IN WIRING

All electrical wiring terminates in the control base wiring chamber. The base has standard 7/8” (22 mm) knockouts which accept

common wiring hardware and conduit fittings. Before removing the knockouts, check the wiring diagram and select those sections of

the chamber with common voltages. Do not allow the wiring to cross between sections, as the wires will interfere with safety dividers

which should be installed at a later time.

Power must not be applied to any of the wires during the rough-in wiring stage.

• Install the Outdoor Sensor 070 and Boiler Sensor 082 according to the instructions in the Data Brochure D 070, and run the wiring

back to the control.

• If an Indoor Sensor 076 or 077 is used, install the indoor sensor according to the instructions in the Data Brochure D 074, and run

the wiring back to the control.

• Run wire from other system components (pumps, valve, boiler, etc.) to the control.

• Run wires from the 120 V (ac) power to the control. Use a clean power source to ensure proper operation. Multi-strand 16 AWG

wire is recommended for all 120 V (ac) wiring due to its superior flexibility and ease of installation into the terminals.

STEP FOUR

ELECTRICAL CONNECTIONS TO THE CONTROL

The installer should test to confirm that no voltage is present at any of the wires. Push the control into the base and slide it down until

it snaps firmly into place.

Powered Input Connections

120 V (ac) Power

Connect the 120 V (ac) power supply to the

Power L

and

Power N

terminals (5 and 6).

This connection provides power to the microprocessor and display of the control. As

well, this connection provides power to the

Boil P1

terminal (7) from the

Power L

terminal (5).

Boiler Demand

To generate a boiler demand, a voltage between 24 V (ac) and 240 V (ac) must be

applied across the

Boiler Demand

terminals (1 and 2).

DHW Demand

To generate a DHW demand, a voltage between 24 V (ac) and 240 V (ac) must be

applied across the

DHW Demand

terminals (3 and 4).

Output Connections

Boiler Pump Contact (

Boil P1

)

The boiler pump output terminal (7) on the 260 is a powered output.

When the relay contact in the 260 closes, 120 V (ac) Line (L) is

provided to the

Boil P1

terminal (7) from the

Power L

terminal (5).

To operate the boiler pump, connect one side of the boiler pump

circuit to terminal 7, and the second side of the pump circuit to the

neutral (

) terminal 8.

DHW

Demand

24 to 240 V (ac)

Boiler

Demand

24 to 240 V (ac)

120 V (ac)

Power

Boil

120 V (ac)

Boiler

pump

DHW Pump / Valve Contact

The

DHW Pmp / Vlv

terminals (9 and 10) are an isolated output in the 260. There is no

power available on these terminals from the control. These terminals are to be used

as a switch to either make or break power to the DHW pump or DHW valve. Since this

is an isolated contact, it may switch a voltage between 24 V (ac) and 240 V (ac).

Boiler Contact

The

Boiler

terminals (11 and 12) are an isolated output in the 260. There is no power

available on these terminals from the control. These terminals are to be used as a

switch to either make or break the boiler circuit. When the 260 requires the boiler to

fire, it closes the contact between terminals 11 and 12.

Sensor and Unpowered Input Connections

Do not apply power to these terminals as this will damage the

control.

Outdoor Sensor

Connect the two wires from the Outdoor Sensor 070 to the

Com

and

Out

terminals (14 and 16). The outdoor sensor is used by the

260 to measure the outdoor air temperature.

Boiler Sensor

Connect the two wires from the Boiler Sensor 082 to the

Com

and

Boil

terminals (14 and 15). The boiler sensor is used by the 260 to

measure the supply (outlet) water temperature from the boiler.

Indoor Sensor

If an indoor sensor is used, connect the two wires from the sensor

to the

Com

and

Indr

terminals (17 and 18). The indoor sensor is

used by the 260 to measure the room air temperature.

Unoccupied Switch

If an external timer (tekmar Timer 032) or switch is used, connect the two wires from

the external switch to the

UnO Sw

and

Com

terminals (13 and 14). When these two

terminals are shorted together, the control registers an unoccupied signal.

STEP FIVE

TESTING THE WIRING

Each terminal block

must be unplugged

from its header on the control before power is applied for testing. To remove a terminal

block, pull it straight down from the control.

The following tests are to be performed using standard testing practices and procedures, and should only be carried out by properly

trained and experienced persons.

A good quality electrical test meter, capable of reading from at least 0 - 300 V (ac) and at least 0 - 2,000,000 Ohms, is essential to

properly test the wiring and sensors.

DHW

Pmp/Vlv

24 to 240 V (ac)

Boiler

Com

Boil

Out

Com

Indr

Boiler

sensor

Com

Boil

Timer Switch

UnO

Com

Test The Sensors

In order to test the sensors, the actual temperature at each sensor

location must be measured. A good quality digital thermometer with a

surface temperature probe is recommended for ease of use and

accuracy. Where a digital thermometer is not available, a spare sensor

can be strapped alongside the one to be tested, and the readings

compared. Test the sensors according to the instructions in the Data

Brochure D 070.

Test The Power Supply

Make sure exposed wires and bare terminals are not in contact with

other wires or grounded surfaces. Turn on the power and measure

the voltage between the

Power L

and

Power N

terminals (5 and 6)

using an AC voltmeter. The reading should be between 108 and 132

V (ac).

Test The Powered Inputs

Boiler Demand

Measure the voltage between the

Boiler Demand

terminals (1 and

2). When the boiler demand device calls for heat, you should

measure between 20 and 260 V (ac) at the terminals. When the

boiler demand device is off, you should measure less than 5 V (ac).

DHW Demand

If a DHW demand is used, measure the voltage between the

DHW

Demand

terminals (3 and 4). When the DHW demand device calls

for heat, you should measure between 20 and 260 V (ac) at the

terminals. When the DHW demand device is off, you should measure

less than 5 V (ac).

Test The Outputs

Boiler Pump (

Boil P1

)

If the boiler pump is connected to the

Boil P1

terminal (7) and

terminal (8), make sure power to the terminal block is off, and install

a jumper between the

Power L

and the

Boil P1

terminals (5 and 7).

Install a second jumper between

Power N

and

terminals (6 and

8). When power is applied to the

Power L

and

Power N

terminals (5

and 6), the boiler pump should start. If the pump does not turn on,

check the wiring between terminal block and pump, and refer to

any installation or troubleshooting information supplied with the

pump. If the pump operates properly, disconnect the power and

remove the jumpers.

DHW Pump or Valve (

DHW Pmp / Vlv

)

If a DHW pump or DHW valve is connected to the

DHW Pmp / Vlv

terminals (9 and

10), make sure power to the pump or valve circuit is off and install a jumper between

those terminals. When the DHW circuit is powered up, the DHW pump should turn on

or the DHW valve should open completely. If the DHW pump or valve fails to operate,

check the wiring between the terminals and the pump or valve, and refer to any

installation or troubleshooting information supplied with these devices. If the DHW

pump or valve operates properly, disconnect the power and remove the jumper.

Ω

Power

108 to 132 V (ac)

Ω

Boiler

Demand

20 to 260 V (ac)

Ω

DHW

Demand

20 to 260 V (ac)

DHW

Pmp/Vlv

24 to 240 V (ac)

120 V (ac)

Power

Boil

Boiler

pump

Ω

Com

Boil

Ω

Boiler

If the boiler circuit is connected to the

Boiler

terminals (11 and 12), make sure power to the boiler circuit is off and install a jumper

between the terminals. When the boiler circuit is powered up, the boiler should fire. If the boiler does not turn on, refer to any

installation or troubleshooting information supplied with the boiler. (The boiler may have a flow switch that prevents firing until the

boiler pump (P1) is running). If the boiler operates properly, disconnect the power and remove the jumper.

Connecting The Control

Make sure all power to the devices and terminal blocks is off, and remove any

remaining jumpers from the terminals.

Reconnect the terminal blocks to the control by carefully aligning them with their

respective headers on the control, and then pushing the terminal blocks into the headers.

The terminal blocks should snap firmly into place.

Install the supplied safety dividers between the unpowered sensor inputs, and the

powered or 24 V (ac) wiring chambers.

Apply power to the control. The operation of the control on power up is described in the

Sequence of Operation

section of this brochure.

DIP Switch Settings

The DIP Switch settings on the control are very important and should be

set to the appropriate settings prior to making any adjustments to the

control through the user interface. The DIP switch settings change the

items that are available to be viewed and / or adjusted in the user

interface.

ADVANCED / INSTALLER

The

Advanced / Installer

DIP switch is used to select which items are available to be viewed and / or adjusted in the user interface.

DHW VALVE / DHW PUMP

The

DHW Valve / DHW Pump

DIP switch is used to select the type of device that is being used to control the flow of heat to the DHW

tank.

Note:

If the DHW tank is piped in primary / secondary,

DHW Valve

must be selected. Refer to section C1.

DHW PRIORITY / OFF

The

DHW Priority / Off

DIP switch is used to select DHW priority. If the DIP switch is set to

DHW Priority

, refer to section C2.

DHW DURING UNOCC / OFF

The

DHW during UnOcc / Off

DIP switch is used to select whether or not DHW will be generated during the unoccupied (Night) period.

DHW during UnOcc

is selected, DHW operates normally. If

Off

is selected, a call for DHW during the unoccupied (Night) period is

ignored.

Quick Setup

To enter the installer programming mode, set the

Advanced / Installer

DIP switch to

Installer

Access the ADJUST menu by pressing and holding simultaneously for 1 second, the

Item

and

buttons. The display will now show

the word ADJUST in the top right corner.

The ROOM OCC adjustment is the first item displayed. Use the or button to set the ROOM temperature.

The ROOM OCC setting is set to the desired room air temperature during the occupied (Day) mode.

Note:

To increase or decrease space temperature during the occupied (Day) mode, only adjust the ROOM

OCC setting.

Off

Installer

Advanced

DHW during UnOcc

DHW Pump

Off

DHW Priority

DHW Valve

ROOM

OCC

ADJUST

UnO

Com

Boil

Out

Press and release the

Item

button to advance to the ROOM UNOCC adjustment. Use the or button to

set the desired temperature. The ROOM UNOCC setting is set to the desired room air temperature during

the unoccupied (Night) mode.

Note:

To increase or decrease space temperature during the unoccupied (Night) mode, only adjust the

ROOM UNOCC setting.

Press and release the

Item

button to advance to the OUTDR DSGN adjustment. Use the

or button to

set the outdoor design temperature. The OUTDR DSGN setting is set to the typical coldest temperature of

the year.

Press and release the

Item

button to advance to the

Terminal Unit

adjustment. Use the

or button to select

the desired terminal unit. The terminal unit number corresponds to the type of terminal that is being used.

The table below lists the terminal units and their default values.

Press and release the

Item

button to advance to the units adjustment. Use the

or button to set the scale

to °F or °C.

To exit the ADJUST menu, press and release the

Item

button to advance to the ESC item. Then either press

the or button, or leave the buttons alone for 20 seconds.

View Menu (1 of 1)

Current outdoor air temperature as measured by the outdoor

sensor. This is also the default display for the control.

-67 to 149°F

(-55 to 65°C)

Current room air temperature as measured by the indoor sensor.

(Indoor sensor is present)

23 to 113°F

(-5 to 45°C)

Current boiler supply water temperature as measured by the

boiler sensor.

14 to 266F

(-10 to 130°C)

Target boiler supply is the temperature the control is currently

trying to maintain at the boiler sensor.

---, 14 to 266°F

(---, -10 to 130°C)

Section

Installer

Display Description Range

ROOM

OCC

ADJUST

Advanced

ADJUST

DSGN

OUTDR

Terminal Unit

ADJUST

VIEW

OUTDR

OCC

VIEW

ROOM

OCC

VIEW

BOIL

OCC

VIEW

TARGET

BOIL

OCC

150°F (66°C)

170°F (77°C)

140°F (60°C)

BOIL DSGN

BOIL MAX

BOIL MIN

Terminal Unit

190°F (88°C)

210°F (99°C)

140°F(60°C)

High Mass Radiant

(1)

120°F (49°C)

140°F (60°C)

OFF

Low Mass Radiant

(2)

Fancoil

(3)

140°F (60°C)

160°F (71°C)

OFF

Fin-tube Convector

(4)

180°F (82°C)

200°F (93°C)

140°F (60°C)

Radiator

(5)

160°F (71°C)

180°F (82°C)

140°F (60°C)

Baseboard

(6)

Adjust Menu (1 of 2)

The desired room air temperature during an

occupied (Day) period.

35 to 100°F

(2 to 38°C)

The desired room air temperature during an

unoccupied (Night) period.

35 to 100°F

(2 to 38°C)

The design outdoor air temperature used in the

heat loss calculation for the heating system.

-60 to 32°F

(-51 to 0°C)

The design indoor air temperature used in the heat

loss calculation for the heating system.

35 to 100°F

(2 to 38°C)

The design supply water temperature used in the

heat loss calculation for the heating system.

70 to 220°F

(21 to 104°C)

The maximum boiler target supply water

temperature.

120 to 225°F

(49 to 107°C)

The type of terminal units that are being used in the

heating system.

The minimum temperature allowed for the boiler

target temperature.

OFF, 80 to 180°F

(OFF, 27 to 82°C)

The system’s warm weather shut down during the

occupied (Day) period.

35 to 100°F, OFF

(2 to 38°C, OFF)

The time delay the control can expect between the

time the boiler contact closes, and the burner fires.

0:00 to 3:00 min

(1 sec. increments)

The differential that the control is to use when it is

operating the boiler.

Ad, 2 to 42°F

(Ad, -17 to 6°C)

1 (High Mass Radi-

ant), 2 (Low Mass

Radiant), 3 (Fancoil),

4 (Fin-tube Convec-

tor), 5 (Radiator),

6 (Baseboard)

Section

Advanced

Installer

Display Description Range

Actual

Setting

ADJUST

DIFF

BOIL

ADJUST

WWSD

OCC

ROOM

OCC

ADJUST

ROOM

OCC

ADJUST

DSGN

OUTDR

ADJUST

INDR

BOIL

ADJUST

BOIL

MAX

ADJUST

BOIL

MIN

Fire Delay

ADJUST

min

Terminal Unit

ADJUST

DSGN

BOIL

Testing the Control

The Boiler Control 260 has a built-in test routine which is used to test

the main control functions. The 260 continually monitors the sensors,

and displays an error message whenever a fault is found. See the

following pages for a list of the 260’s error messages and possible

causes. When the

Test

button is pressed, the test light is turned on.

The individual outputs and relays are tested in the following test

sequence.

TEST SEQUENCE

Each step in the test sequence lasts 10 seconds.

During the test routine, the test sequence is paused by pressing the

Test

button. Only if there is a boiler demand can the control be

paused in a step. If the

Test

button is not pressed again for 5 minutes while the test sequence is paused, the control exits the entire

test routine. If the test sequence is paused, the

Test

button can be pressed again to advance to the next step. This can also be used

to rapidly advance through the test sequence. To reach the desired step, repeatedly press and release the

Test

button until the

appropriate device and segment in the display turn on.

Step 1

- The boiler pump (

Boil P1

) is turned on for 10 seconds.

Step 2

- The

Boiler

contact is turned on for 10 seconds. After 10 seconds, the

Boiler

and

Boil P1

contacts are shut off.

Step 3

- If a DHW pump is selected as the DHW device, the

DHW Pmp / Vlv

contact is turned on for 10 seconds and is then shut

off.

- If a DHW valve is selected as the DHW device, the

DHW Pmp / Vlv

and

Boil P1

contacts are turned on for 10 seconds and

then shut off.

Note

: This step can only be paused if a DHW demand is present.

Step 4

- After the test sequence is completed, the control resumes its normal operation.

Adjust Menu (2 of 2)

Section

Advanced

Installer

Display Description Range

Actual

Setting

The system’s warm weather shut down during the

unoccupied (Night) period.

35 to 100°F, OFF

(2 to 38°C, OFF)

The units of measurement that all of the

temperatures are to be displayed in the control.

°F, °C

This item exits the ADJUST menu by pressing

either the or button.

ADJUST

WWSD

OCC

Test

not testing

testing

testing paused

off

red

ADJUST

Troubleshooting

When troubleshooting any heating system, it is always a good idea to establish a set routine to follow. By following a consistent routine,

many hours of potential headaches can be avoided. Below is an example of a sequence that can be used when diagnosing or

troubleshooting problems in a hydronic heating system.

Establish the problem. Get as much information from the customer as possible about the problem. Is there

too much heat, not enough heat, or no heat? Is the problem only in one particular zone or area of the building,

or does the problem affect the entire system? Is this a consistent problem or only intermittent? How long

has the problem existed for? This information is critical in correctly diagnosing the problem.

Understand the sequence of operation of the system. If a particular zone is not receiving enough heat, which

pumps or valves in the system must operate in order to deliver heat to the affected zone? If the zone is

receiving too much heat, which pumps, valves, or check valves must operate in order to stop the delivery

of heat?

Press the

Test

button on the control and follow the control through the test sequence as described in the

Testing section. Pause the control as necessary to ensure that the correct device is operating as it should.

Sketch the piping of the system. This is a relatively simple step that tends to be overlooked, however, it can

often save hours of time in troubleshooting a system. Note flow directions in the system paying close

attention to the location of pumps, check valves, pressure bypass valves, and mixing valves. Ensure correct

flow direction on all pumps. This is also a very useful step if additional assistance is required.

Document the control for future reference. Before making any adjustments to the control, note down all of

the items that the control is currently displaying. This includes items such as error messages, current

temperatures and settings, and which devices should be operating as indicated by the LCD. This information

is an essential step if additional assistance is required to diagnose the problem.

Isolate the problem between the control and the system. Now that the sequence of operation is known

and the system is sketched, is the control operating the proper pumps and valves at the correct times? Is

the control receiving the correct signals from the system as to when it should be operating? Are the proper

items selected in the menus of the control for the device that is to be operated?

Test the contacts, voltages and sensors. Using a multimeter, ensure that the control is receiving adequate

voltage to the power terminals and the demand terminals as noted in the technical data. Use the multimeter

to determine if the internal contacts on the control are opening and closing correctly. Follow the instructions

in the Testing the Wiring section to simulate closed contacts on the terminal blocks as required. Test the

sensors and their wiring as described in the sensor Data Brochures.

Establish the

Problem

Understand the

Sequence of

Operation

Use the Test

Routine

Sketch the

Piping in the

System

Document the

Control

Isolate the

Problem

Test the Contacts

Voltages &

Sensors

Error Messages

The control was unable to read a piece of information from its EEPROM. This error can be caused by a

noisy power source. The control will load the factory defaults and stop operation until all the settings are

verified.

This error is caused by an illegal DHW DIP switch setting. When

DHW Priority

and

DHW Valve

are selected

in the DIP switch settings, the control will flash the error message. In this case, the control will operate as

if the

DHW Priority / Off

DIP switch is set to

Off

. To clear the error message from the control, set the

DHW

Priority / Off

DIP switch to

Off

and press the

Item

button.

The control is no longer able to read the outdoor sensor due to a short circuit. In this case the control

assumes an outdoor temperature of 32°F (0°C) and continues operation. Locate and repair the problem as

described in the Data Brochure D 070. To clear the error message from the control after the sensor has

been repaired, press the

Item

button.

The control is no longer able to read the outdoor sensor due to an open circuit. In this case the control

assumes an outdoor temperature of 32°F (0°C) and continues operation. Locate and repair the problem as

described in the Data Brochure D 070. To clear the error message from the control after the sensor has

been repaired, press the

Item

button.

The control is no longer able to read the boiler sensor due to a short circuit. In this case the control does not

operate the

Boiler

contact. Locate and repair the problem as described in the Data Brochure D 070. To

clear the error message from the control after the sensor has been repaired, press the

Item

button.

The control is no longer able to read the boiler sensor due to an open circuit. In this case the control does

not operate the

Boiler

contact. Locate and repair the problem as described in the Data Brochure D 070. To

clear the error message from the control after the sensor has been repaired, press the

Item

button.

The control is no longer able to read the indoor sensor due to a short circuit. The control will continue to

operate as if there was nothing connected to the indoor sensor input. Locate and repair the problem as

described in the Data Brochure D 074. To clear the error message from the control after the sensor has

been repaired, press the

Item

button.

The control is no longer able to read the indoor sensor due to an open circuit. The control will continue to

operate as if there was nothing connected to the indoor sensor input. Locate and repair the problem as

described in the Data Brochure D 074. If the indoor sensor was deliberately removed, the control must be

powered down, and then powered back up. To clear the error message from the control after the sensor

has been repaired, press the

Item

button.

VIEW

ROOM

VIEW

ROOM

VIEW

BOIL

VIEW

BOIL

VIEW

OUTDR

VIEW

OUTDR

VIEW

Limited Warranty The liability of tekmar Control Systems Ltd. and tekmar

Control Systems, Inc. (“tekmar”) under this warranty is limited. The purchaser,

by taking receipt of the tekmar product (“product”), acknowledges receipt of

the terms of the warranty and acknowledges that it has read and

understands same.

tekmar warrants each tekmar product against defects in workmanship and materi-

als, if the product is installed and used in compliance with tekmar's instructions. The

warranty period is for a period of twenty-four (24) months from the production date

if the product is not installed during that period, or twelve (12) months from the

documented date of installation if installed within twenty-four (24) months from the

production date.

The liability of tekmar under this warranty shall be limited to, at tekmar's sole dis-

cretion: the cost of parts and labor provided by tekmar to repair defects in materials

and/or workmanship of the defective product; or to the exchange of the defective

product for a replacement product; or to the granting of credit limited to the original

cost of the defective product, and such repair, exchange or credit shall be the sole

remedy available from tekmar, and, without limiting the foregoing in any way,

tekmar is not responsible, in contract, tort or strict product liability, for any

other losses, costs, expenses, inconveniences, or damages, whether direct, indi-

rect, special, secondary, incidental or consequential, arising from ownership or use

of the product, or from defects in workmanship or materials, including any liability

for fundamental breach of contract.

This warranty applies only to those products returned to tekmar during the

warranty period. This warranty does not cover the cost of the parts or labor

to remove or transport the defective product, or to reinstall the repaired or

replacement product. Returned products that are not defective are not cov-

ered by this warranty.

This warranty does not apply if the product has been damaged by negligence

by persons other than tekmar, accident, ﬁre, Act of God, abuse or misuse; or

has been damaged by modiﬁcations, alterations or attachments made sub-

sequent to purchase which have not been authorized by tekmar; or if the

product was not installed in compliance with tekmar’s instructions and the

local codes and ordinances; or if due to defective installation of the product;

or if the product was not used in compliance with tekmar’s instructions.

This warranty is in lieu of all other warranties, express or implied, which the

Governing Law (being the law of British Columbia) allows parties to contrac-

tually exclude, including, without limitation, warranties of merchantability,

ﬁtness for a particular purpose, durability or description of the product, its

non-infringement of any relevant patents or trademarks, and its compliance

with or non-violation of any applicable environmental, health or safety legis-

lation; the term of any other warranty not hereby contractually excluded is

limited such that it shall not extend beyond twenty-four (24) months from the

production date, to the extent that such limitation is allowed by the Govern-

ing Law.

Product Return Procedure Products that are believed to have defects in work-

manship or materials must be returned, together with a written description of the

defect, to the tekmar representative for that territory. If the address of the repre-

sentative is not known, please request it from tekmar at the telephone number

listed below

Control Systems

tekmar Control Systems Ltd., Canada

tekmar Control Systems, Inc., U.S.A.

Head Ofﬁce: 5100 Silver Star Road

Vernon, B.C. Canada V1B 3K4

Tel. (250) 545-7749 Fax. (250) 545-0650

Web Site: www.tekmarcontrols.com

Limited Warranty and Product Return Procedure

tekmar Control Systems Ltd. and tekmar Control Systems, Inc.

All speciﬁcations are subject to change without notice.

Printed in Canada. D 260 - 03/09.

20 of 20

The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise.

Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian

Interference-Causing Equipment Regulations. However, if this control does cause harmful interference to radio or television reception,

which is determined by turning the control off and on, the user is encouraged to try to correct the interference by reorienting or relocating

the receiving antenna, relocating the receiver with respect to this control, and/or connecting the control to a different circuit from that

to which the receiver is connected.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Caution The nonmetallic enclosure does not provide grounding between conduit connections. Use grounding type bushings and jumper

wires.

Attention Un boîtier nonmétallique n’assure pas la continuité électrique des conduits. Utiliser des manchons ou des ﬁls de accord

spécialement conçus pour la mise á la terre.

Technical Data

Boiler Control 260

One Stage Boiler & DHW

Literature — D 260, A 260’s, D 001, D 070, E 003.

Control — Microprocessor PID control; This is not a safety (limit) control.

Packaged weight — 3.0 lb. (1340 g), Enclosure A, blue PVC plastic

Dimensions — 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)

Approvals — CSA C US, CSA 22.2 No 24 and UL 873, meets class B: ICES & FCC Part 15.

Ambient conditions — Indoor use only, 32 to 113°F (0 to 45°C), < 90% RH non-condensing.

Power supply — 120 V ±10%, 50/60 Hz, 1300 VA

Relays — 240 V (ac) 10 A 1/3 hp

Demands — 20 to 260 V (ac) 2 VA

Sensors included — NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892

Outdoor Sensor 070 and Universal Sensor 082.

Optional devices — tekmar type #: 032, 076, 077.

C US

H1154D

Made in Canada by

tekmar Control Systems Ltd.

tektra 910-01

Date Code

Meets Class B:

Canadian ICES

FCC Part 15

(ac)

tekmar 260 Installation guide

Brand: tekmar

Model: 260

Category: Weather stations

Type: Installation guide

This manual is also suitable for

Boiler Control 260

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tekmar 260 Installation guide

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tekmar 260 Installation guide

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